Glyn Hale began his musical career at an early age, working
as choir accompanist and pianist in a dance band while still in school. After winning a scholarship to the Guildhall
School of Music, he became a freelance musician, working in small theatres,
hotels, and concert halls. There
followed work as a musician on the Cunard liners Queen Mary and Queen
Elizabeth, then three years in television for BBC and ITV, during which he
recorded over 500 programs. During this
time he wrote music for such series as Detective, The Jazz Age,
and Nicholas Nickelby.

Throughout this period he continued to work in theatre and
cabaret, making his first of many London conducting appearances as musical
director at the London Palladium for the comedy act Mike & Bernie
Winters. Some West End shows he
directed included The Boy Friend (Comedy), The Changeling (Aldwych), "A Patriot for Me" (Haymarket), and Aladdin (Shaftesbury). In the early 1970s he
toured America as musical director for The Bee Gees.

Hale then joined the D'Oyly Carte Opera Company, serving as
assistant musical director from April 1974 to July 1976. While with the Company he married D'Oyly Carte
chorister Gillian Burrows.

After leaving the D'Oyly Carte, Hale spent three years as
musical supervisor for a company producing pantomimes. He then resumed touring again with such
artists as Tommy Steele, Frankie Howerd, Mike Yarwood, and Gladys Knight and
the Pips, and served for a while as musical director for Combined Services
Entertainment. He returned to London as
assistant musical director and, later, musical director for the Drury Lane
production of 42nd Street.